How a Blood Hunters rites would do with a fire…

How a Blood Hunters rites would do with a firearm if someone took the feat for proficiency?

This may have been answered somewhere else already, but was curious how a blood hunters rites would do with a firearm if someone took the feat for proficiency Same as any other ranged weapon. 🙂 — Matthew Mercer (@matthewmercer) September 18, 2018